Worked fine. Now redoing it all with grip under Kubuntu on the same hardware.
Note to Self: hang onto that ancient 16X Plextor drive..
Since Self is slow on the draw today, I've taken a felt-tipped marker and written Keep for CD-Ripping!! on the front of the drive. That ought to do it.
Important tip: alcohol can be used to completely wipe away such markings if required.